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<FONT color="green">001</FONT>    <a name="line.1"></a>
<FONT color="green">002</FONT>    /*<a name="line.2"></a>
<FONT color="green">003</FONT>     * Copyright (C) 2011 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<FONT color="green">004</FONT>     *<a name="line.4"></a>
<FONT color="green">005</FONT>     * $Id: ContextMainClass.html 21 2011-02-16 15:27:14Z archie.cobbs $<a name="line.5"></a>
<FONT color="green">006</FONT>     */<a name="line.6"></a>
<FONT color="green">007</FONT>    <a name="line.7"></a>
<FONT color="green">008</FONT>    package org.dellroad.stuff.main;<a name="line.8"></a>
<FONT color="green">009</FONT>    <a name="line.9"></a>
<FONT color="green">010</FONT>    import org.springframework.context.support.ClassPathXmlApplicationContext;<a name="line.10"></a>
<FONT color="green">011</FONT>    <a name="line.11"></a>
<FONT color="green">012</FONT>    /**<a name="line.12"></a>
<FONT color="green">013</FONT>     * Support superclass for {@link MainClass} implementations that wish to execute<a name="line.13"></a>
<FONT color="green">014</FONT>     * with an associated Spring application context.<a name="line.14"></a>
<FONT color="green">015</FONT>     */<a name="line.15"></a>
<FONT color="green">016</FONT>    public abstract class ContextMainClass extends MainClass {<a name="line.16"></a>
<FONT color="green">017</FONT>    <a name="line.17"></a>
<FONT color="green">018</FONT>        protected ClassPathXmlApplicationContext context;<a name="line.18"></a>
<FONT color="green">019</FONT>    <a name="line.19"></a>
<FONT color="green">020</FONT>        private void openContext() {<a name="line.20"></a>
<FONT color="green">021</FONT>            String path = getContextLocation();<a name="line.21"></a>
<FONT color="green">022</FONT>            this.log.info("opening application context " + path);<a name="line.22"></a>
<FONT color="green">023</FONT>            this.context = new ClassPathXmlApplicationContext(path, getClass());<a name="line.23"></a>
<FONT color="green">024</FONT>        }<a name="line.24"></a>
<FONT color="green">025</FONT>    <a name="line.25"></a>
<FONT color="green">026</FONT>        private void closeContext() {<a name="line.26"></a>
<FONT color="green">027</FONT>            this.log.info("closing application context");<a name="line.27"></a>
<FONT color="green">028</FONT>            this.context.close();<a name="line.28"></a>
<FONT color="green">029</FONT>            this.context = null;<a name="line.29"></a>
<FONT color="green">030</FONT>        }<a name="line.30"></a>
<FONT color="green">031</FONT>    <a name="line.31"></a>
<FONT color="green">032</FONT>        /**<a name="line.32"></a>
<FONT color="green">033</FONT>         * Get the classpath location of this instance's associated XML application context.<a name="line.33"></a>
<FONT color="green">034</FONT>         * The returned string will resolved on the classpath relative to this instance's class.<a name="line.34"></a>
<FONT color="green">035</FONT>         *<a name="line.35"></a>
<FONT color="green">036</FONT>         * &lt;p&gt;<a name="line.36"></a>
<FONT color="green">037</FONT>         * The implementation in {@link ContextMainClass} returns {@code getClass().getSimpleName() + ".xml"},<a name="line.37"></a>
<FONT color="green">038</FONT>         * which will locate an XML file in the same package and with the same name.<a name="line.38"></a>
<FONT color="green">039</FONT>         */<a name="line.39"></a>
<FONT color="green">040</FONT>        protected String getContextLocation() {<a name="line.40"></a>
<FONT color="green">041</FONT>            return getClass().getSimpleName() + ".xml";<a name="line.41"></a>
<FONT color="green">042</FONT>        }<a name="line.42"></a>
<FONT color="green">043</FONT>    <a name="line.43"></a>
<FONT color="green">044</FONT>        /**<a name="line.44"></a>
<FONT color="green">045</FONT>         * Autowire this instance using its associated application context.<a name="line.45"></a>
<FONT color="green">046</FONT>         * This may be invoked by {@link #runInContext} to autowire this bean using its associated context.<a name="line.46"></a>
<FONT color="green">047</FONT>         *<a name="line.47"></a>
<FONT color="green">048</FONT>         * &lt;p&gt;<a name="line.48"></a>
<FONT color="green">049</FONT>         * For this to work, the application context must have autowiring enabled, e.g., via<a name="line.49"></a>
<FONT color="green">050</FONT>         * {@code &lt;context:annotation-config/&gt;}.<a name="line.50"></a>
<FONT color="green">051</FONT>         */<a name="line.51"></a>
<FONT color="green">052</FONT>        protected void autowire() {<a name="line.52"></a>
<FONT color="green">053</FONT>            this.log.info("autowiring instance of " + this.getClass() + " using " + this.context.getAutowireCapableBeanFactory());<a name="line.53"></a>
<FONT color="green">054</FONT>            this.context.getAutowireCapableBeanFactory().autowireBean(this);<a name="line.54"></a>
<FONT color="green">055</FONT>        }<a name="line.55"></a>
<FONT color="green">056</FONT>    <a name="line.56"></a>
<FONT color="green">057</FONT>        @Override<a name="line.57"></a>
<FONT color="green">058</FONT>        public final int run(final String[] args) throws Exception {<a name="line.58"></a>
<FONT color="green">059</FONT>    <a name="line.59"></a>
<FONT color="green">060</FONT>            // Open context<a name="line.60"></a>
<FONT color="green">061</FONT>            openContext();<a name="line.61"></a>
<FONT color="green">062</FONT>    <a name="line.62"></a>
<FONT color="green">063</FONT>            // Invoke subclass<a name="line.63"></a>
<FONT color="green">064</FONT>            try {<a name="line.64"></a>
<FONT color="green">065</FONT>                return this.runInContext(args);<a name="line.65"></a>
<FONT color="green">066</FONT>            } catch (Exception e) {<a name="line.66"></a>
<FONT color="green">067</FONT>                this.log.error("caught exception during execution", e);<a name="line.67"></a>
<FONT color="green">068</FONT>                throw e;<a name="line.68"></a>
<FONT color="green">069</FONT>            } finally {<a name="line.69"></a>
<FONT color="green">070</FONT>                closeContext();<a name="line.70"></a>
<FONT color="green">071</FONT>            }<a name="line.71"></a>
<FONT color="green">072</FONT>        }<a name="line.72"></a>
<FONT color="green">073</FONT>    <a name="line.73"></a>
<FONT color="green">074</FONT>        /**<a name="line.74"></a>
<FONT color="green">075</FONT>         * Execute the main method. The application context will be open when this method is invoked.<a name="line.75"></a>
<FONT color="green">076</FONT>         */<a name="line.76"></a>
<FONT color="green">077</FONT>        protected abstract int runInContext(String[] args) throws Exception;<a name="line.77"></a>
<FONT color="green">078</FONT>    }<a name="line.78"></a>
<FONT color="green">079</FONT>    <a name="line.79"></a>




























































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